Grease-gun.



A J woon.

-v GREASE GUN.

APPLICATION msn rss. 21. |911.

1,25 9 ,8 1 8 Patented Mar. 19, 1918.

differential gearing.

A J IOOID, OF GREENVILLE, MICHIGAN.

GREASE-GUN.

Specication of Letters Patent.

Patented Mar. 19, 1918.

Application led February 27, 1917. Serial No. 151,202.

To all .whom itmay concern.'

Beit known that I, A J Woon, a citizen of the Unitedy States of America,residing at Greenville, in the county of Montcalm and State of Michigan,have invented certain new` and useful Improvements in Grease- Guns; andI do hereby declare the following to be a full, clear, and exactdescription' of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to an appliance for handling greases and thelike, especially those greases of a more or less heavy consistency whichare used in .lubricating certain parts of the mechanism of motorvehicles such as the transmission and the It is the object and purposeof my invention to provide a device of this character of very simplestructure and one which can be economically produced,the inventionlconsisting in many novel features of construction and arrangement ofparts whereby the functions of the machine are eiiiciently attained. Myinvention is illustrated in the accompanying.

drawing in which:

Figure 1 is a vertical section taken centrally through the device.

Fig. 2 is a plan view thereof. Fig. 3 is a fragmentary vertical sectiontaken through the lower part of the pump barrel and the coacting seatJtherefor and showing'the relative position of the parts on the upwardstroke of the pump piston.

Figs. 4 and 5 are a plan and side View, respectively, ofthe seat memberfor the lower part of the pump barrel. l

Like reference characters .refer to like parts throughout the severalviews of the dra-wing. 4 1

In the construction a receptacle 1 is provided having-av bottom 2 thewhole being supported by' standards 3jthe lower ends of which are turnedoutward to make horizon" tal feet 4 against any one of which the foot ofthe operator may be placed when the device is operated. An opening ismade' in the bottom 2 above which is located a member '5 having arelatively large head anda projecting screw threaded shank 6- whichextends through the opening in and is secured to the bottom 2 by anelbow coupling 7 screwing on to shank 6. Washers 8 are interposedbetween the head 5 and coupling 7 and the bottom 2 to make a greasetight connection. The free end of the elbow 7 has a ieXible hose9'connected thereto as shown.

I The' member 5 ,heretofore described is bored centrally the 'diameterof the bore at lts uppe end being larger than at its lower end and aninclined seat 10 formed at the Juncture of the two bores of differentdiamet'er. A rod 11 projects upwardly from member 5 and at its upper endis curved in substantially' circular form as shown at 12 making a guide.for the lower part of a cylindrical barrel 13 whichextends the fulllength of receptacle -l and at its upper end passes loosel through a'supporting bracket 14 connecte to one side of the receptacle. A plug 15closes fthe upper end of the barrel. Depending from the plug is aiiexible member 16, preferably' ,of spring' steel, which at its lowerend is tur'ned inwardly toward the barrel, forming al .lip 17 as shown.A rod `18 having a handle 1-9 at- 'its upper end passes through theplugl, its lower end carrying a' suitable valveless pis'ton 20.

In operation, thelreceptacle being wholly orA partially filled with agrease and the piston 2O being at the lower end 'of the barrel as shown,in Fig.' 1, to obtain Kgre'se.,-fr'om the receptacle the operatorplaceshisfoot on one of'the mernbers 4 and pulls upwardly on' thelhandle-'19. The iirst effect is to elevate',the barrel 13 until lip 17engages against the bracket 14 the lower end of the barrel occupyingsubstantially the position shown in Fig. 3 with an unobstructed space:between the lower end of the barrel Vand the member 5. With thecontinuation of thev pull on handle 19, rod 18 and piston 20 are',carried upwardly, and the grease is drawn in by suction throu h this oening below the barrel into 'the arrel. n the downward stroke the firstmovement that occurs is the dropping ofthe barrel so that its lower endseats against theconical seat 10 closing the opening between the barreland the member 5 whereupon the further movement of the piston 2O forcesthe grease outward through the hose 9 to any desired place.

Many changes in minor detail of structure and in the positioning of thebarrel 13 with its associated mechanism may be made without departingfrom the invention. Ac-

cordingly, I do not wish to be limited to the eXact structure shown butconsider myself entitled to any and all modifications in structure whichcome within the scope of .the appended claims dening the inventlon.

I elaim:-

1. A device of the character described, including a receptacle, a memberhaving a passage therethrough secured in the bottom of the receptacle, aconduit connected to and leading away from said member, a barrel looselymounted above said member, a valveless piston in the barrel, means forraising and lowering the piston, said barrel being elevated with saidraising and returned to' lower position on said lowering of the piston,`a tapered seat on said member for the lower end of 'the barrel, a guidemeans connected to said member and assowciated with the lower end of thebarrel to guide the same into engagement with the sea-t, and meanslimiting the upward movement of the barrel, substantially as delscribed.

2. A device of the character described, including a receptacle, abracket secured to and extending inwardly from a wall of the receptacleadjacent its upper end, a member having a passage therethrough securedon 'the bottom of the receptacle, a barrel passed loosely through thebracket and havin its lower end normally entered into said passage, aconical tapered seat on the member against which the lower end of thebarrel normally engages, a plug closing the upper end of the barrel, avalveless piston in the barrel, a rod secured thereto extending throughthe plug, a handle en the upper end 'of the rod, and a member secured atthe upper end of 'the barrel extending downwardly for a distance andturned inwardly toward the barrel to form a stop to engage against thebracket on upward movement of the barrel, substantially as described.

3. A. device of the character described including a receptacle, a barrelloosely mounted therein; guides for the upper and lower ends of thebarrel. a conical tapered seat for the lower end of the barrel, meansfor limiting the upward movement of the barrel, a bottom to thereceptacle having an opening therethrough in alinement with the interiorof the barrel, a vflexible hose in communication with said opening, apiston in the barrel, and means for operating the piston, substantiallyas described.

-l. A device of the character described including a receptacle, a bottomto the receptacle having an opening therein, a member having an enlargedhead and a threaded shank, the shank passing downwardly through saidopening, said member being interiorly bored, with the boring at theupper end of larger diameter `than at the lower end and an annularinclined seat connectinfv the borings, a cylindrical barrel norma lyentered into the upper part of said member and resting at its lower endon said seat, a guide carried by said member loosely passing around thelower part of the barrel, an elbow coupling screwed on to the shank ofthe member, a iexible hose connected to the coupling, a bracket securedadjacent the upper part of the receptacle through which the barrelloosely passes, a plug closing the upper end of the barrel, a piston inthe barrel, a rod connected thereto passing through the plug, a handleou the upper end of the rod, and a member connected to the plugextending downwardly alongside the barrel for a distance and turnedinwardly toward the barrel at its lower end.

In testimony whereof I aliix my signature.

A d' WOOD

